Pumping mechanism for windmills



Ma 24 1927. y o. E. MccAsKlLL PUMPING MECHANISM FOR WINDMILLS 2 Shoots-Sheet 1 Filed, Sep?l 2, 1926 .hum/n? Stimm,

Ilatented May 2.4, 1927.

PATENT OFFICE.

OSCAR E. MCCASKILL, jOF FORT WORTH, TEXAS.

PUMIPING MECHANISM FOR WINDMILLS.

Application led September 2, 1926. Serial No. 133,242.

` My invention relates to pumping mechanisn'i and more particularly in windmill construction to means for guiding and lubricating the crosshead and cfa-operating parts; and the objectis to provide a more simple means :tor guiding` the eros. head and to provide a more simple means tor keeping the working parts lnlnicated and to eliminate vseveral cumbersomeand expensive guiding parts. yOther objects and advantages` will.l

be fully explained in the toller-ving descrip! tion andthe invention will hcmore par-A ticularly pointed ont in the fclaims, l Reference is Vhad to the accompanying drawings which 'form a part or" this application. y

Fig. 1 is a broken View, being a .vertical cross-section of the gear casings and'connections. i

Fig. 2 is a similar view on smaller scale,

' showing a variation oit the crosshead which permitsthebracing ot the guide tube from the hood. y

Fig. 3 is ay vertical longitudinal section ot' the gear casing andconnect-ions.-

.Fig 4 illustrates a variation in the cross# head connection with the upper end of the guiding means. i f

Fig. 5 is a horizontal section, `taken on the line 5-5 of Fig. 4. y Y

Fig. 6 is a detail View of theupper end of theV cross-head and .guide tube.

Similar characterszot' reference are usedv to indicate the same parts throughout the several views.

y The drawings show the operating parts ot the 'windmill and pumping mechanism and the gear casing and supports.` The casing 1 has extensions 2 and 3 which inclose the gearing. Bearing members 4 and 5 ttor the Windwheel shaft 6 are boltedto the casing 1. These bearing members carry enough lubricant to keep the parts lubricated. Oil or other lubricant is to berplaced in the casing and filled up to the windwheel shatt-V 6. Pinions 7 are rigid with the shaft 6 and mesh with and drive cog Wheels 8. rlfhe gear wheels 8 are rigid with a shaft 9 which is journaled in bearings 10. The windwheely drives the shaft 6 which drives the pinions 7 which drive thei cog wheels 8. The cog wheels 8 actuate the pitman bars 11 which are pivotally connected to Hm' niet pingllfg which are rigid with the Wheels 8. The pitman bars 11 arepivotallv lconnected to Vthe crosshead 13 by pivot bolts 14. The

crosshead 13 has lateral extensions at the lower end and these extensions are slotted Aabove the pivot` pin holes. After the` pivotpins are. inserted 1n their holes or sockets,

the partsoppositc the sidesot the slots are drawn towards each other by bolts 15 to clamp the pivot pins 14 against turning. The crossheadjl3 isl a. tubular 4structure provided with the integral lateral extensions for connection with the pitman bars and the crosshead moves `vertically on the outside otI the tubular guide 16. The tube 16 serves as a guide for the cross-head 13 andv holds the lubricant in the casino" 1. `This tube y16 is rigid with casing `1 andt'orins a passage way for the piston rod 17 and prevents any lubricant from coming in contact with the piston rod 17 which vmoves vertically withinl the. tube 16. The tube 16 is extended :turther Vup than the high point ot the stroke ot' the crosshead13 so that it will torni ya guide for the crosshead. See Figs. 4 to 6 inclusive. n One method of attaching the piston 17 to the crosshead 13 is shown in Fig. 1." The cross-head has an annular interior shoulder 18 and the piston rod 17 has a head 19. A cap 2O is screwed vinto thecrosshead 13 and a rset screw 21 is screwed through the cap 20 and bears slightly on the head 19 ojlf pistonrod 17 and holds the head loosely against the shoulder 18. This permits a swivel ot the piston rod 17 at its upper end;

Another method of attaching the piston rod 17 to the cross-head is shownin VF ig. 2. The piston rod`17v is rigidly connected to the crosshead 13 by screwing the end ot the piston through the top of the crosshead and securing theppiston rod `to the crosshead by a nut 22. A head 23 is attached to the casing 1 and the guide 16 isbraced by bolts `rigidly to the crosshead. This method permits the bracing ot' theguide 16 by means of a cap 28and bracci-od 29 Which may be attached to the casing 1. In this construction the guide tube 16 is slotted to accommor` date the T-head 26011 piston rod 17 v and longenough to permit t'ull strokes of the crosshead 18.

Various other changes in the construction. proportion and arrangement ot' the several parts may be made without departing trom my invention. One of the advantages ot' this invention is that a single guide rod. as above shown, provides a more flexible mechanism when used in connection with dilii'erential gears and suitable seit-aligning` pitman bearings because it permits a rocking motion of such gears' and bearings about the guide rod for causing both gears to be driven by pinions at all times thereby overcoming thev bad eliiects of unevonly divided teeth in either gears or pinions.

The oil level stands in casing 1 approximately even with the bot-tom ot shaft (i'. The bottom step 29 of the crosshead 13 dips into the oil on the downstrole and on the upstroke, the bottomstep Q9 of the crosshead 13 carries oil above the position oi the upper step 30 at its down stroke. As the upper stroke is taking place, theoil is wiped trom the outside of the tube 16 and the oil liows through a. slot in the crosshead 13 on top of pin 14 and on into the upper pitman bearing. 1

lVhat I claim, is,-

1. In a windmill mechanism provided with a casing and a vertically movable piston rod; a crosshead for said piston rod, a tubular guide for said crosshead rigid with said casing and having a liquid tight connection therewith and forming a passageway for the piston rod and forming a guide for a crosshead and preventing lubricating material from touching said piston rod= and means for lubricatingsaid crosshead.

2. In a windmill pumping mechanism provided with a casing and a vertically moving piston rod; a orosshead for said piston rod, a tubular guide for said crosshead rigid with said casing and forming a passage way for said piston rod and preventing lubricant from touching Said piston rod and forming a guide for a4 crosshead, and means for lubricating said crosshead.

3. In a windmill pun'iping mechanism provided with a casing and a vertically moving piston rod and a crosshead driving -said piston;V a tubular guide rigid with and having a liquid tight connection with said casing and forming a passage way 'tor said piston rod running within said guide and l'orming a guide for said crosshead ruiming on the outside of said guide and protecting said piston rod from lubricant, and means Al'or lubricating said crosshead.

'1. In a windmill pumping mechanism provided with a casing and a vertically moving piston rod and a crosshead driving said piston; a tubular guide rigid with said casing and forming a liquid tight connection therewith, Said crosshead surrounding and vertically moving on the outside ol said guide, means for lubricating said crosshead, and means operatively connectillg said piston rod and cross-head.

5. In a windmill pumping mechanism provided with a lubricant containing casing and a vertically moving piston rod and a crosshead; a-tubular guide rigid with said casing and forming a passage way for said piston rod and preventing lubricant lfrom coming in Contact with said piston rod, and forming a guide `for said crossheadmoving vertically on the outside of said guide, means for lubricating said crosshead, and means for operatively connecting said piston rod and said crosshead.

In testimony whereof, I set my hand, this 18th day of August, 1926.

soan E. MCoAsKILL. 

